Heat a pan with 2 cups of water and a tsp of oil. Bring it to boil, then include vermicelli. Cook till vermicelli is soft(not mushy), switch off once done.
Ensure the vermicelli is not sticky. Strain all the water using a fine strainer. Next cook all the veggies in a cup of water and little salt.
Next include tamarind water, jaggery and bisibele bhath powder. Let the veggies cook for some time.
Next include cooked pigeon pea lentils and mix well. When it cooks to thick curry like consistency, add salt and cooked vermicelli from step 1.
Let vermiclli cook for sometime. Adjust water as needed. As bisibele bhath thickens with time, let it be watery initially. Switch off.
Heat a tempering pan adding all the ingredients under "To temper" list. When mustard seeds sizzle pour it over bisibele bhath. Delicious vermicelli bisibele bhath is ready to serve with boondi.